Plywood panels collected from thirty seven mills located
throughout the Pacific Northwest they were treated with chromated copper
arsenate Type C (CCA-C) or ammoniacal copper zinc arsenate (ACZA) using
modified full cell and full cell processes respectively. Preliminary
tests were performed to determine plywood sample size, replication, and
treating schedule.
ACZA produced better preservative treatment than CCA in plywood
from all regions. For both treatments, outer veneers had higher
preservative penetration than inner veneers. Plywood panels from
Washington, Oregon, or Idaho were similar in treatability and were
better treated than plywood from Montana.
Differences in plywood treatability between Washington, Oregon,
Idaho and Montana differed from those previously found in lumber.
Species composition and veneer distribution also influenced plywood
treatability. Within a geographic region log source was linked to
plywood treatability in panels containing only one species.

en

dc.language.iso

en_US

en

dc.subject.lcsh

Plywood -- Preservation

en

dc.subject.lcsh

Wood products -- Northwest, Pacific -- Preservation

en

dc.subject.lcsh

Wood preservatives

en

dc.title

Treatability of plywood panels containing western wood species from different geographic regions of the Pacific Northwest

en

dc.type

Thesis/Dissertation

en

dc.degree.name

Master of Science (M.S.) in Forest Products

en

dc.degree.level

Master's

en

dc.degree.discipline

Forestry

en

dc.degree.grantor

Oregon State University

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dc.description.digitization

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